Impact of Integrative Cardiopulmonary Exercise Testing (2)
What Is an Integrative Cardiopulmonary Exercise Test?
The integrative cardiopulmonary exercise test allows the simultaneous measurement during known exercise stress of the following: (1) the balance between oxygen supply to the myocardium and myocardial oxygen requirement, assessed primarily from changes indicating ischemia on the electrocardiogram; (2) the adequacy of oxygen delivery (a cardiovascular function) to the muscles of locomotion; and (3) the ability to transfer 02 into and eliminate C02 from the blood (a pulmonary and cardiovascular function). antibiotics levaquin
To accomplish these tasks, the patient is asked to exercise at a known work rate on some form of ergometer, such as a cycle or treadmill, while a number of variables are measured in the laboratory including the following: (1) the electrocardiogram; (2) blood pressure; (3) expired air flow; (4) 02 uptake from the air; (5) C02 output from the body; and (6) arterial blood gases. All but the last can be determined “nonin vasively,” and a useful measure of blood oxygenation can be obtained using a noninvasive pulse oximeter during exercise. On the other hand, we find it helpful and convenient to directly measure blood pressure with an indwelling arterial catheter (invasive).